Police say a Ford pickup truck was travelling north on Osborne Street when it collided with a black Harley Davidson motorcycle, travelling west on Thorah Concession 5. The driver of the motorcycle was reportedly thrown from his vehicle.

He was taken to hospital before being airlifted to a Toronto-area trauama centre. Police say the motorcycle driver suffered life-threatening injuries.

The 31-year-old man from Markham who had been driving the pickup truck, as well as his three passengers, remained on scene and were not injured.

The roadway was closed for several hours while police investigated.

Anyone with information about this incident is asked to call Cst. Wannop of the Traffic Services Branch at 1-888-579-1520 extension 5274.

Anonymous information can be sent to Durham Regional Crime Stoppers at 1-800-222-8477. Tipsters may be eligible for a $2000 cash reward.